Chicagoland and Northwest Indiana Backflow Testing Experts
Quick quotes and on-time backflow testing appointments with certified professionals!
Quick quotes and on-time backflow testing appointments with certified professionals!
Annual backflow testing is required by Illinois and Indiana law.
Backflow testing is required by law in the State of Illinois and Indiana. Chicago Backflow has been testing backflows in both states for over 30 years, providing expert backflow services to businesses and homes near you. Affordable backflow testing complying with state backflow regulations has been the heart of what we do.



Our team is comprised of fully licensed inspectors who specialize solely in the meticulous testing, certification, and repair of backflow preventers. Unlike other providers, our commitment goes beyond the ordinary.
Affordable Backflow Testing Program
You will experience a level of assurance that sets us apart with our all-inclusive testing program.
Excellent Customer Experience
Test with us, and you are family!
We understand annual backflow tests only happen once a year or the backflow emergency at 9pm after hours. During these times, you need professionalism, backflow expertise, fast, 24/7 service. Certainly, you need peace of mind. Choosing CBI ensures you get access the best backflow testers in the State of Illinois and Indiana, the device parts you need, and industry-leading customer service. Our inspectors only job is the testing and maintenance of backflow preventers, making them the best in the business. Our goal is to get in, get the job done, and get out…leaving you with more time and money to get on with your day.
What to Expect During A Backflow Test
- Our expert tester will promptly meet with your designated contact to provide a comprehensive briefing for the job at hand. Prior to commencement, we diligently conduct any necessary background or security checks as per your requirements.
- Upon locating the backflow device, we ensure readiness with the appropriate forms for any agreed-upon tests. The backflow test initiation involves meticulous utilization of various tools and gauges to meticulously assess any pressure differentials within the backflow device.
- In the majority of cases, the device functions flawlessly and passes the test without issue. However, should a failure occur, our seasoned testers adeptly address the situation by disassembling the device to remove any debris obstructing the valves. Over our years of experience, we’ve encountered an array of obstructions, from tennis balls to large rocks, promptly resolving such issues.
- Equipped with a comprehensive inventory of spare parts, we are fully prepared to address any necessary repairs on-site. Subsequent to disassembly, resetting the tamper switch is undertaken as part of our meticulous process.
- Before departing, we consistently ensure to brief the property owner on the completed tasks and any forthcoming visits.
The CBI Promise: Six Points of Excellence
CBI has tested and certified a wide variety of business and will meet your property/building requirements!
- Restaurants
- Multi-Family Buildings
- Commercial Properties
- Small Businesses
- Higher Education Buildings
- Medical & Hospital Facilities
- Industrial Complexes
- High-Rise Buildings
- Municipal Complexes.
Chicago Backflow proudly serves a diverse range of businesses, from small local shops to large industrial facilities. We understand that each client has unique needs, and we have successfully accommodated numerous special requests to ensure customer satisfaction. Whether it is following specific procedures for repairing devices, such as adjusting how we conduct our work to minimize disruption or meeting strict security requirements through comprehensive background checks for high-security locations, we are committed to providing flexible, professional, and reliable backflow services tailored to each customer’s individual needs. We recognize the importance of maintaining uninterrupted operations and guest experiences. CBI strives to do everything we can to make your experience seamless. Please mention any additional requests or concerns you may have during your scheduling.